The Wiscasset, Waterville & Farmington Railway No. 7 was a 28-ton 2-4-4T forney built in 1907 in Philadelphia by the Baldwin Locomotive Works (Construction No. 31692).
The locomotive served the railway faithfully for many years before being severely damaged in a roundhouse fire at Wiscasset.
The damaged locomotive was scrapped in 1937.
A new build of No. 11 is currently under construction.